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Complementary Medicine: Green and black tea intake in relation to prostate cancer risk among Singapore Chinese

Cancer Causes and Control, 08/07/2012


Montague JA et al. – There was no association between daily green tea intake and prostate cancer risk, compared with no green tea intake. For black tea, a statistically significant positive association and trend were observed for daily intake compared with no black tea intake.

Methods

Tea consumption data for 27,293 men were collected at baseline (between 1993 and 1998) using a validated food frequency questionnaire.
After an average of 11.2 years of follow-up, 298 men had developed prostate cancer.
Proportional hazards regression methods were used to assess the associations between tea intake and prostate cancer risk.

Results

There was no association between daily green tea intake and prostate cancer risk, compared with no green tea intake [hazard ratio (HR)=1.08; 95 % confidence interval (CI) 0.79, 1.47].
For black tea, a statistically significant positive association and trend were observed for daily intake compared with no black tea intake (HR=1.41, 95 % CI 1.03, 1.92; p for trend<0.01).

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